'Double Down: Game Change 2012,' written by journalists Mark Halperin and John Heilemann.

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A new book on the 2012 presidential campaign details the extent to which former President George W. Bush and other Republicans tried to push former Indiana Gov. Mitch Daniels to enter the race - and how one potential rival's camp tried to keep him out.

An aide to former Utah Gov. Jon Huntsman encouraged reporters to write about Daniels' divorce and remarriage to his wife, Cheri, according to "Double Down: Game Change 2012," written by journalists Mark Halperin and John Heilemann.

A spokeswoman for Purdue University, where Daniels is now president, said Monday that Daniels has not read the ...